Earplug



FIG. 1 is a front, left, top perspective view of an earplug showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a cross-sectional view thereof, taken along line 8-8 of FIG. 2.

The broken lines shown in FIG. 8 illustrate the plane upon which the cross-section is taken and form no part of the claimed design. 

CLAIM The ornamental design for an earplug, as shown and described. 